<template>
  <el-form ref="loginFormRef" :model="loginForm" :rules="loginRules" size="large">
    <el-form-item prop="username">
      <el-input v-model="loginForm.username" placeholder="用户名">
        <template #prefix>
          <el-icon class="el-input__icon">
            <user/>
          </el-icon>
        </template>
      </el-input>
    </el-form-item>
    <el-form-item prop="password">
      <el-input v-model="loginForm.password" type="password" placeholder="密码" show-password
                autocomplete="new-password">
        <template #prefix>
          <el-icon class="el-input__icon">
            <lock/>
          </el-icon>
        </template>
      </el-input>
    </el-form-item>
    <el-form-item prop="captcha">
      <el-col :span="15">
        <el-input type="text" maxlength="6" placeholder="验证码"
                  v-model="loginForm.code" clearable autocomplete="off">
          <template #prefix>
            <el-icon class="el-input__icon">
              <Position/>
            </el-icon>
          </template>
        </el-input>
      </el-col>
      <el-col :span="1"></el-col>
      <el-col :span="8">
        <el-button class="login-content-captcha">
          <el-image :src="captchaImg" @click="getCaptcha"/>
        </el-button>
      </el-col>
    </el-form-item>
  </el-form>
  <div class="login-btn">
    <el-button :icon="CircleClose" round size="large" @click="resetForm(loginFormRef)"> 重置</el-button>
    <el-button :icon="UserFilled" round size="large" type="primary" :loading="loading" @click="login(loginFormRef)">
      登录
    </el-button>
  </div>
</template>

<script setup>
import {ref, reactive, onMounted, computed} from "vue";
import {useRouter} from "vue-router";
import {HOME_URL} from "@/config";
import {getTimeState} from "@/utils";
import {ElNotification} from "element-plus";
import {getCodeImg, loginApi} from "@/api/modules/login";
import {useUserStore} from "@/stores/modules/user";
import {useTabsStore} from "@/stores/modules/tabs";
import {useKeepAliveStore} from "@/stores/modules/keepAlive";
import {initDynamicRouter} from "@/routers/modules/dynamicRouter";
import {CircleClose, UserFilled, Position} from "@element-plus/icons-vue";
import md5 from "md5";

const router = useRouter();
const userStore = useUserStore();
const tabsStore = useTabsStore();
const keepAliveStore = useKeepAliveStore();

const loginFormRef = ref();
const loginRules = reactive({
  username: [{required: true, message: "请输入用户名", trigger: "blur"}],
  password: [{required: true, message: "请输入密码", trigger: "blur"}],
  code: [{required: true, message: "请输入验证码", trigger: "blur"}],
});

const loading = ref(false);
const captchaImg = ref("")
const loginForm = reactive({
  username: "admin",
  password: "admin123",
  code: '789',
  codeKey:""
});

const getCaptcha = async () => {
  getCodeImg().then(res => {
    captchaImg.value = import.meta.env.VITE_API_URL + res.data.image_url;
    loginForm.codeKey = res.data.key;
  })
};

onMounted(()=>{
  getCaptcha()
})


// login
const login = (formEl) => {
  if (!formEl) return;
  formEl.validate(async valid => {
    if (!valid) return;
    loading.value = true;
    try {
      // 1.执行登录接口
      // const { data } = loginApi({...loginForm, password: md5(loginForm.password)});

      // password   Base64编码后的结果
      loginApi({...loginForm, password: btoa(loginForm.codeKey + " " + loginForm.password)}).then(async (res) => {
        const data = res.data
        userStore.setToken(data.token);
        userStore.setUserInfo({userid:data.userid,nickname:data.nickname});

        // 2.添加动态路由
        await initDynamicRouter();

        // 3.清空 tabs、keepAlive 数据
        tabsStore.setTabs([]);
        keepAliveStore.setKeepAliveName([]);

        // 4.跳转到首页
        router.push(HOME_URL);
        ElNotification({
          title: getTimeState(),
          message: `欢迎登录`,
          type: "success",
          duration: 3000
        });
      }).catch(()=>{
        // 登陆失败时，刷新验证码
        getCaptcha()
      });
    } finally {
      loading.value = false;
    }
  });
};

// resetForm
const resetForm = (formEl) => {
  if (!formEl) return;
  formEl.resetFields();
};

onMounted(() => {
  // 监听 enter 事件（调用登录）
  document.onkeydown = (e) => {
    e = (window.event) || e;
    if (e.code === "Enter" || e.code === "enter" || e.code === "NumpadEnter") {
      if (loading.value) return;
      login(loginFormRef.value);
    }
  };
});
</script>

<style scoped lang="scss">
@import "../index";
</style>
